CN108103938B - A kind of double deck module solid trial assembly method of large steel girder - Google Patents

A kind of double deck module solid trial assembly method of large steel girder Download PDF

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Publication number
CN108103938B
CN108103938B CN201711214464.2A CN201711214464A CN108103938B CN 108103938 B CN108103938 B CN 108103938B CN 201711214464 A CN201711214464 A CN 201711214464A CN 108103938 B CN108103938 B CN 108103938B
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sections
plate
layer
assembled
railway
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CN108103938A (en
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陈方能
那宪伟
马浩鹏
王宾骆
李春毅
杨婉莹
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Jiangsu Zhongtie Shanqiao Heavy Industry Co Ltd
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Jiangsu Zhongtie Shanqiao Heavy Industry Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The present invention relates to a kind of double deck module solid trial assembly methods of large steel girder, it is assembled that the solid trial assembly method includes the following steps: that (1) carries out the examination of continuous coupling segment on dedicated general assembly moulding bed, Liang Duan lower layer railway beam sections are successively positioned, and detect straightness, node spacing and camber;(2) after the completion of the upper surface assembly upper layer highway beam sections of the web member of lower layer's railway beam sections, first section assembling, and it is wide to detect purlin height, cross-section face diagonal difference and purlin;(3) according to lower layer's railway beam sections, the highway beam sections of step (1) and step (2) successively assembled subsequent segment, detect that overall length, side sway, purlin is wide, diagonal line is poor and camber after the completion, lower tire transhipment of disintegrating after qualified.The present invention has the advantages that the present invention uses reasonable assembled sequence, convenient for the control of each node, meanwhile, the splicing accuracy of upper layer highway beam sections and lower layer's railway beam sections has been effectively ensured in the technological parameter of each node of strict control.

Description

A kind of double deck module solid trial assembly method of large steel girder
Technical field
The invention belongs to bridge manufacturing technology field, in particular to the double deck module solid of a kind of large steel girder is tried Dress method.
Background technique
With the rapid development of social economy, the pressure of land transportation is increasingly highlighted, in order to solve this pressure, largely The projects such as railway, highway build it is imperative, for the great rivers passed through across road, the bridge of large span Using certainty is tended to, people are also designed in the structure of the bridge to different distance.
In the bridge that the present invention studies, main bridge is that the double rope face Low Towers steel case steel truss of double tower combine girder stayed-cable bridge, overall length 1234.6m, bridge floor use double layer design, and upper layer is 8 lane roads, and lower layer is four-track line.This bridge condition of delivery is divided into up and down Two beam sections shippings.Upper deck of bridge and top boom form highway beam sections, the railway beam sections of lower boom, railway deck composition It is totally shipped respectively with web member bolt.
Due to its structure detail special construction, reasonable assembling sequence and stringent process parameter control are formulated to ensure to spell It is particularly important to fill precision.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of large-scale steel truss that rationally assembles and can effectively ensure that precision The double deck module solid trial assembly method of beam.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of double deck module of large steel girder is vertical Body trial assembly method, innovative point are:
The double deck module includes upper layer highway beam sections and lower layer's railway beam sections, the upper layer highway beam sections Including several T-type crossbeams arranged side by side, floorings are fixedly connected in the upper surface of T-type crossbeam, and in T-type crossbeam and bridge The both ends of panel are equipped with the top boom for being fixedly connected with T type crossbeam and floorings;Lower layer's railway beam sections include being parallel to each other The top plate and bottom plate of setting are connected and fixed in the top plate and bottom plate by board-like crossbeam and stringer, and in top plate and bottom plate Both ends are additionally provided with the lower boom for connecting top plate and bottom plate from the inside to the outside and cross section is the tuyere of V-shape;The top plate upper surface Both ends be also symmetrically arranged in V-shape be arranged web member;
The solid trial assembly method includes the following steps:
(1) it is assembled that the examination of continuous coupling segment is carried out on dedicated general assembly moulding bed, successively positions Liang Duan lower layer railway beam sections, And detect straightness, node spacing and camber, it is ensured that straightness error control≤1mm, the control of node interval error≤ 0.5mm and camber control are in ± 3mm;
(2) after the completion of the upper surface assembly upper layer highway beam sections of the web member of lower layer's railway beam sections, first section assembling, And it is wide to detect purlin height, cross-section face diagonal difference and purlin, it is ensured that the high control errors in purlin are controlled in ± 2.0mm, cross-section face diagonal difference In≤wide control errors of 6mm and purlin in ± 6mm;
(3) according to step (1) and step (2) successively lower layer's railway beam sections of assembled subsequent segment, upper layer highway segment Beam detects overall length control errors ± 5mm, L≤50000mm, side sway≤L/5000, the wide control errors ± 6mm in purlin, right after the completion Linea angulata difference≤6mm and camber error are in ± 3mm, lower tire transhipment of disintegrating after qualified.
Further, the production of the upper layer highway beam sections includes the following steps:
(1) plate unit two spells one: first by technique requirement, laterally docking is combined into top plate unit on two spelling moulding beds before upper tire Plate;
(2) top boom is in place: positioning the top boom precise measurement made on highway beam sections splicing jig frame, it is ensured that The Kong Qun of chord node is in length and breadth on two sides and highness change is in≤1.0mm;
(3) crossbeam is assembled: several T-type crossbeams arranged side by side being located between two top booms, makes crossbeam and winds up Bar temporarily positions;
(4) floorings unit splicing: first splice the floorings of side on T-type crossbeam, bridge floor plate unit is according to by middle part Sequence to two sides is assembled, and first welded bridge panel unit longitudinal joint, then welds T-type crossbeam and bridge floor plate welding seams;Wherein, welding is adopted With carbon dioxide gas arc welding plus submerged-arc welding;
(5) with allowance≤20mm is cut, bridge deck width≤35200mm, first postwelding connection upper cord member and bridge floor plate: are controlled Bolt controls weld contraction in the process, it is ensured that keyhole precision, and weld using first weldering crossbeam and stringer weld seam, it is rear to weld connection beam weldering The sequence of seam, when welding, pay attention to symmetrical welding;
(6) non-referenced end is cut in scribing line two: after in this segment, weld seam is fully completed, tested with reference line to plate unit, Non-referenced end cutting can be carried out after qualification, and reserved two amounts of cutting are cut according to reference edge and segmental length scribing line;
(7) adjacent bridge panel unit is assembled: first bridge floor plate unit in the middle part of assembled adjacent internode, then assembled both side plate list Member is finally welded, and the welding requirements according to step (5) is welded;
(8) non-referenced end is cut in scribing line two: after weld seam is fully completed, being tested with reference line to plate unit, after qualified It can carry out non-referenced end cutting;Reserved two amounts of cutting are cut according to reference edge and segmental length scribing line.
Further, the production of lower layer's railway beam sections includes the following steps:
(1) plate unit two spells one: first by technique requirement, laterally docking is combined into bottom board unit on two spelling moulding beds before upper tire Plate;
(2) position lower boom: precise measurement positions lower boom on railway beam sections splicing jig frame, and returns out bottom plate positioning Line;
(3) it is laid with bottom plate: being laid with bottom from centre to both sides on the railway beam sections splicing jig frame between the lower boom of two sides Plate simultaneously welds longitudinal joint;Wherein, welding adds submerged-arc welding using carbon dioxide gas arc welding;
(4) crossbeam, stringer are assembled: the assembled crossbeam on bottom plate, and are positioned with punch and plain bolt and lower boom, then Spelling stringer;In splicing, control straightness≤3mm, flatness≤2.0mm and node spacing≤2.0mm;
(5) assembled top plate: the top plate unit in the middle part of positioning on crossbeam, then two sides top plate is organized, longitudinal joint is first welded, then weld transverse joint, The weld seam of last welding beam and roof and floor;Wherein, welding adds submerged-arc welding using carbon dioxide gas arc welding;
(6) assembled tuyere: according to overall package technique with non-referenced end is cut, the weldering between floorings and lower boom is first welded Seam, then cantilever diaphragm and lower boom are bolted, last tuyere unit is in place, is welded using carbon dioxide gas arc welding;
(7) web member is in place: web member is the in place, connection on floorings.
The present invention has the advantages that
(1) the double deck module solid trial assembly method of large steel girder of the present invention, wherein on upper layer highway beam sections and When lower layer's railway beam sections carry out assembled, uses tradition instead and spliced lower layer's railway beam sections, then spelled in lower layer's railway beam sections Connecting layer highway beam sections is first to splice one unit module of lower layer's railway beam sections, then splice on the beam module of lower layer's railway segment One upper layer highway segment beam module, then in the lower layer's railway beam sections and upper layer highway beam sections of successively assembled subsequent segment, Assembly sequence, convenient for the control of each node, meanwhile, upper layer highway has been effectively ensured in the technological parameter of each node of strict control The splicing accuracy of beam sections and lower layer's railway beam sections;
(2) the double deck module solid trial assembly method of large steel girder of the present invention, highway, railway segment installation are crucial It is to control welding and shrink and deform to influence, it is ensured that the corners such as deck-molding, diagonal line difference reach technical requirements;Meanwhile welding quality It is the emphasis of section assembling quality control, thus this invention takes reasonable welding method and strict technology state modulator, Welding deformation effectively is controlled, further improves the precision of three-dimensional trial assembly;
(3) the double deck module solid trial assembly method of large steel girder of the present invention, the manufacture of highway beam sections is using company Continuous match group weldering and the assembled parallel process program of examination, this scheme can effectively guarantee connecing between interface and floorings of winding up Mouth matching precision, convenient for the installation in building site;For guarantee floorings and main truss top boom level board Interface Matching precision, orthogonal After the completion of anisotropic Steel Bridge Deck welding, scribing line cutting both sides control bridge deck width;In addition, first being welded using reasonable welding sequence Bridge floor longitudinal seam is connect, cross weld, last welding beam and bridge floor weld seam is then welded again, maximally reduces in component Stress guarantees assembled quality;
(4) the double deck module solid trial assembly method of large steel girder of the present invention, the manufacture of railway beam sections is using company Continuous match group weldering and the assembled parallel process program of examination, this scheme can effectively guarantee the Interface Matching precision of each component, just Installation in building site.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is that the structure of double deck module in the double deck module solid trial assembly method of large steel girder of the present invention is shown It is intended to.
Fig. 2-Fig. 6 is the production flow diagram of highway beam sections at the middle and upper levels of the invention.
Fig. 7-Figure 13 is the production flow diagram of lower layer's railway beam sections in the present invention.
Figure 14-Figure 16 is the assembled flow chart of highway beam sections in upper layer of the present invention and lower layer's railway beam sections.
Specific embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this It is bright to be limited among the embodiment described range.
Embodiment
In the present embodiment, the double deck module of large steel girder, as shown in Figure 1, including upper layer highway beam sections 1 under Layer railway beam sections 2, upper layer highway beam sections 1 include several T-type crossbeams 11 arranged side by side, in the upper end of T-type crossbeam 11 Face is fixedly connected with floorings 12, and is equipped at the both ends of T-type crossbeam 11 and floorings 12 and is fixedly connected with T-type crossbeam 11 and bridge The top boom 13 of panel 12;Lower layer's railway beam sections 2 include top plate 21 and bottom plate 22 arranged in parallel, in the top plate 21 Be connected and fixed with bottom plate 22 by board-like crossbeam 23 and stringer 24, and the both ends of top plate 21 and bottom plate 22 be additionally provided with by it is interior extremely The lower boom 25 and cross section of outer connection top plate and bottom plate are the tuyere 26 of V-shape, and the both ends of 21 upper surface of top plate are also symmetrically set There is the web member 27 in V-shape setting.
In the present embodiment, the double deck module solid trial assembly method of large steel girder includes that upper layer highway beam sections 1 are made Make, three steps of the production of lower layer's railway beam sections 2 and three-dimensional trial assembly.
The production of upper layer highway beam sections 1 includes the following steps:
(1) plate unit two spells one: as shown in Fig. 2, top plate unit first spells cross on moulding bed two by technique requirement before upper tire Plate is combined into docking;
(2) top boom 13 is in place: as shown in figure 3,13 essence of top boom that will be made on highway beam sections splicing jig frame True measurement and positioning, it is ensured that the Kong Qun of chord node is in length and breadth on two sides and highness change is in≤1.0mm;
(3) crossbeam 11 is assembled: as shown in figure 4, several T-type crossbeams 11 arranged side by side are located in two top booms 13 Between, position crossbeam 11 and top boom 13 temporarily;
(4) floorings unit splicing: as shown in figure 5, first splicing the floorings 12 of side, floorings on T-type crossbeam 11 Unit is assembled according to the sequence from middle part to two sides, and first welded bridge panel unit longitudinal joint, then welds T-type crossbeam and floorings weldering Seam;Wherein, welding adds submerged-arc welding using carbon dioxide gas arc welding;
(5) with allowance≤20mm is cut, bridge deck width≤35200mm, first postwelding connection upper cord member and bridge floor plate: are controlled Bolt controls weld contraction in the process, it is ensured that keyhole precision, and weld using first weldering crossbeam and stringer weld seam, it is rear to weld connection beam weldering The sequence of seam, when welding, pay attention to symmetrical welding;
(6) non-referenced end is cut in scribing line two: after in this segment, weld seam is fully completed, tested with reference line to plate unit, Non-referenced end cutting can be carried out after qualification, and reserved two amounts of cutting are cut according to reference edge and segmental length scribing line;
(7) adjacent bridge panel unit is assembled: as shown in fig. 6, first bridge floor plate unit in the middle part of assembled adjacent internode, then assembled Two sides plate unit, is finally welded, and welds the welding requirements according to step (5);
(8) non-referenced end is cut in scribing line two: after weld seam is fully completed, being tested with reference line to plate unit, after qualified It can carry out non-referenced end cutting;Reserved two amounts of cutting are cut according to reference edge and segmental length scribing line.
The production of lower layer's railway beam sections 2 includes the following steps:
(1) plate unit two spells one: as shown in fig. 7, bottom board unit first spells cross on moulding bed two by technique requirement before upper tire Plate is combined into docking;
(2) lower boom 25 is positioned: as shown in figure 8, precise measurement positions lower boom 25 on railway beam sections splicing jig frame, And return out bottom plate position line;
(3) it is laid with bottom plate 22: as shown in figure 9, on railway beam sections splicing jig frame between two sides lower boom 25 in Between be laid with to both sides and bottom plate 22 and weld longitudinal joint;Wherein, welding adds submerged-arc welding using carbon dioxide gas arc welding;
(4) crossbeam 23, stringer 24 are assembled: as shown in Figure 10, the assembled crossbeam 23 on bottom plate 22, and with punch and common spiral shell Bolt and lower boom position, then spelling stringer 24;In splicing, control straightness≤3mm, flatness≤2.0mm and node Spacing≤2.0mm;
(5) assembled top plate 21: as shown in figure 11, the top plate unit in the middle part of positioning on crossbeam 23, then two sides top plate 21 is organized, first Longitudinal joint is welded, then welds transverse joint, the weld seam of last welding beam and roof and floor;Wherein, welding is added using carbon dioxide gas arc welding Submerged-arc welding;
(6) assembled tuyere 26: as shown in figure 12, according to overall package technique with non-referenced end is cut, first weld floorings with Weld seam between lower boom, then cantilever diaphragm and lower boom are bolted, last tuyere unit is in place, and use is CO 2 gas-shielded It is welded;
(7) web member 27 is in place: as shown in figure 13, web member is the in place, connection on floorings.
Three-dimensional trial assembly method includes the following steps:
(1) it is assembled that the examination of continuous coupling segment is carried out on dedicated general assembly moulding bed, successively positions Liang Duan lower layer railway beam sections, And detect straightness, node spacing and camber, it is ensured that straightness error control≤1mm, the control of node interval error≤ 0.5mm and camber control are in ± 3mm;
(2) as shown in figure 14, in the upper surface assembly upper layer highway beam sections of the web member of lower layer's railway beam sections, first segment After the completion of assembly, and it is wide to detect purlin height, cross-section face diagonal difference and purlin, it is ensured that the high control errors in purlin are in ± 2.0mm, cross section pair The control of linea angulata difference is in≤wide control errors of 6mm and purlin in ± 6mm;
(3) as shown in figs, according to lower layer's railway segment of step (1) and step (2) successively assembled subsequent segment Beam, upper layer highway beam sections detect overall length control errors ± 5mm, L≤50000mm, side sway≤L/5000, the wide mistake in purlin after the completion Poor control ± 6mm, diagonal line difference≤6mm and camber error are in ± 3mm, lower tire transhipment of disintegrating after qualified.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and Its equivalent thereof.

Claims (3)

1. a kind of double deck module solid trial assembly method of large steel girder, it is characterised in that:
The double deck module includes upper layer highway beam sections and lower layer's railway beam sections, and the upper layer highway beam sections include Several T-type crossbeams arranged side by side are fixedly connected with floorings in the upper surface of T-type crossbeam, and in T-type crossbeam and floorings Both ends be equipped with and be fixedly connected with the top booms of T-type crossbeam and floorings;Lower layer's railway beam sections include arranged in parallel Top plate and bottom plate, be connected and fixed in the top plate and bottom plate by board-like crossbeam and stringer, and at the both ends of top plate and bottom plate It is additionally provided with the lower boom for connecting top plate and bottom plate from the inside to the outside and cross section is the tuyere of V-shape;The two of the top plate upper surface End is also symmetrically arranged with the web member being arranged in V-shape;
The solid trial assembly method includes the following steps:
(1) it is assembled that the examination of continuous coupling segment is carried out on dedicated general assembly moulding bed, successively positions Liang Duan lower layer railway beam sections, and examine Survey straightness, node spacing and camber, it is ensured that straightness error control≤1mm, the control of node interval error≤0.5mm with And camber control is in ± 3mm;
(2) it after the completion of the upper surface assembly upper layer highway beam sections of the web member of lower layer's railway beam sections, first section assembling, and examines It is wide to survey purlin high, cross-section face diagonal difference and purlin, it is ensured that the high control errors in purlin ± 2.0mm, the control of cross-section face diagonal difference≤ The wide control errors of 6mm and purlin are in ± 6mm;
(3) complete according to the lower layer's railway beam sections, upper layer highway beam sections of step (1) and step (2) successively assembled subsequent segment At rear detection overall length control errors ± 5mm, beam sections L≤50000mm, side sway≤L/5000, the wide control errors ± 6mm in purlin, right Linea angulata difference≤6mm and camber error are in ± 3mm, lower tire transhipment of disintegrating after qualified.
2. the double deck module solid trial assembly method of large steel girder according to claim 1, it is characterised in that: described The production of upper layer highway beam sections includes the following steps:
(1) plate unit two spells one: first by technique requirement, laterally docking is combined into plate to top plate unit on two spelling moulding beds before upper tire;
(2) top boom is in place: positioning the top boom precise measurement made on highway beam sections splicing jig frame, it is ensured that two sides The Kong Qun of upper chord node is in length and breadth and highness change is in≤1.0mm;
(3) crossbeam is assembled: several T-type crossbeams arranged side by side being located between two top booms, face crossbeam with top boom Shi Dingwei;
(4) floorings unit splicing: first splicing the floorings of side on T-type crossbeam, and bridge floor plate unit is according to from middle part to two The sequence of side is assembled, and first welded bridge panel unit longitudinal joint, then welds T-type crossbeam and bridge floor plate welding seams;Wherein, welding uses two Carbon oxide gas protection weldering plus submerged-arc welding;
(5) connection upper cord member and bridge floor plate: with allowance≤20mm is cut, controlling bridge deck width≤35200mm, first postwelding bolt, Weld contraction is controlled in the process, it is ensured that keyhole precision, and weld using first weldering crossbeam and stringer weld seam, connection beam weld seam is welded afterwards Sequentially, symmetrical welding is paid attention to when welding;
(6) non-referenced end is cut in scribing line two: after in this segment, weld seam is fully completed, tested with reference line to plate unit, it is qualified After can carry out non-referenced end cutting, reserved two amounts of cutting are cut according to reference edge and segmental length scribing line;
(7) adjacent bridge panel unit is assembled: first bridge floor plate unit in the middle part of assembled adjacent internode, then assembled two sides plate unit, most After weld, welding according to step (5) welding requirements;
(8) non-referenced end is cut in scribing line two: after weld seam is fully completed, tested with reference line to plate unit, it can after qualified Carry out non-referenced end cutting;Reserved two amounts of cutting are cut according to reference edge and segmental length scribing line.
3. the double deck module solid trial assembly method of large steel girder according to claim 1,
It is characterized by: the production of lower layer's railway beam sections includes the following steps:
(1) plate unit two spells one: first by technique requirement, laterally docking is combined into plate to bottom board unit on two spelling moulding beds before upper tire;
(2) position lower boom: precise measurement positions lower boom on railway beam sections splicing jig frame, and returns out bottom plate position line;
(3) it is laid with bottom plate: being laid with bottom plate simultaneously from centre to both sides on the railway beam sections splicing jig frame between the lower boom of two sides Weld longitudinal joint;Wherein, welding adds submerged-arc welding using carbon dioxide gas arc welding;
(4) crossbeam, stringer are assembled: the assembled crossbeam on bottom plate, and are positioned with punch and plain bolt and lower boom, then spelling Stringer;In splicing, control straightness≤3mm, flatness≤2.0mm and node spacing≤2.0mm;
(5) assembled top plate: the top plate unit in the middle part of positioning on crossbeam, then two sides top plate is organized, longitudinal joint is first welded, then weld transverse joint, finally The weld seam of welding beam and roof and floor;Wherein, welding adds submerged-arc welding using carbon dioxide gas arc welding;
(6) assembled tuyere: according to overall package technique with non-referenced end is cut, first welding the weld seam between floorings and lower boom, Cantilever diaphragm and lower boom are bolted again, and last tuyere unit is in place, is welded using carbon dioxide gas arc welding;
(7) web member is in place: web member is the in place, connection on floorings.
CN201711214464.2A 2017-11-28 2017-11-28 A kind of double deck module solid trial assembly method of large steel girder Active CN108103938B (en)

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Publication number Priority date Publication date Assignee Title
CN109702363B (en) * 2018-12-26 2021-02-02 江苏中铁山桥重工有限公司 All-welded steel truss arch bridge welding method
CN110016874B (en) * 2019-01-22 2021-02-19 中国船舶重工集团应急预警与救援装备股份有限公司 Erecting mechanism and method of intelligently monitored lower chord strengthening system
CN111945545A (en) * 2020-08-12 2020-11-17 董礼 Bridge facility that modularization was assembled

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JP2003193419A (en) * 2001-12-25 2003-07-09 Sato Tekko Co Ltd Reinforcing structure of steel truss bridge
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